Fix typo in google checks mod file name

Ugh I'm so stupid

Author: phrdang

.github/workflows/java-checkstyle.yml

@@ -26,6 +26,6 @@ jobs:
         reporter: github-pr-review
         # report on anything that is in an added/modified file
         filter_mode: file
-        # fail_on_error: true
-        checkstyle_config: ../google_checks_mod.xml
-        # workdir: ./src/com/code4tomorrow  # working dir relative to root dir
+        fail_on_error: true
+        checkstyle_config: google_checks_mod.xml
+        workdir: ./src/com/code4tomorrow  # working dir relative to root dir